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Ultrahigh Surface‐Enhanced Raman Scattering of Graphene from Au/Graphene/Au Sandwiched Structures with Subnanometer Gap
Author(s) -
Zhan Zhaoyao,
Liu Lihui,
Wang Wei,
Cao Zhejian,
Martinelli Anna,
Wang Ergang,
Cao Yu,
Chen Jianing,
Yurgens August,
Sun Jie
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201600358
Subject(s) - graphene , materials science , raman scattering , raman spectroscopy , nanotechnology , plasmon , optoelectronics , optics , physics
Au/graphene/Au sandwiched plasmonic structures with subnanometer gaps are investigated as ultrasensitive surface‐enhanced Raman scattering substrates for graphene and chemical sensing. The subnanomater gaps offer tremendous enhancement in Raman signature of graphene and also chemical molecules, the enhancement mechanism is attributed to the drastic electric field concentration in the subnanometer gaps defined by the graphene template.